diff options
Diffstat (limited to 'neozip/arch/x86/crc32_pclmulqdq.c')
| -rw-r--r-- | neozip/arch/x86/crc32_pclmulqdq.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/neozip/arch/x86/crc32_pclmulqdq.c b/neozip/arch/x86/crc32_pclmulqdq.c new file mode 100644 index 0000000000..c8be1b43ba --- /dev/null +++ b/neozip/arch/x86/crc32_pclmulqdq.c @@ -0,0 +1,31 @@ +/* + * Compute the CRC32 using a parallelized folding approach with the PCLMULQDQ + * instruction. + * + * A white paper describing this algorithm can be found at: + * doc/crc-pclmulqdq.pdf + * + * Copyright (C) 2013 Intel Corporation. All rights reserved. + * Copyright (C) 2016 Marian Beermann (support for initial value) + * Authors: + * Wajdi Feghali <wajdi.k.feghali@intel.com> + * Jim Guilford <james.guilford@intel.com> + * Vinodh Gopal <vinodh.gopal@intel.com> + * Erdinc Ozturk <erdinc.ozturk@intel.com> + * Jim Kukunas <james.t.kukunas@linux.intel.com> + * + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#ifdef X86_PCLMULQDQ_CRC + +#include "crc32_pclmulqdq_tpl.h" + +Z_INTERNAL uint32_t crc32_pclmulqdq(uint32_t crc, const uint8_t *buf, size_t len) { + return crc32_copy_impl(crc, NULL, buf, len, 0); +} + +Z_INTERNAL uint32_t crc32_copy_pclmulqdq(uint32_t crc, uint8_t *dst, const uint8_t *src, size_t len) { + return crc32_copy_impl(crc, dst, src, len, 1); +} +#endif |